GatewayAPI blog

Latest news, tips & tricks, customer cases, and in-depth technical posts

Surveys via SMS: Your Shortcut to Happier Customers

Surveys via SMS: Your Shortcut to Happier Customers

Learn how SMS-based surveys can help companies improve their customer experience and drive growth.

Celebrating 25 Years of ONLINECITY.IO: Important Lessons in Digital Innovation

Celebrating 25 Years of ONLINECITY.IO: Important Lessons in Digital Innovation

ONLINECITY.IO, GatewayAPI’s parent company, was founded 25 years ago. Read more about its history as well as the guiding principles that have shaped the company since its inception.

Sender ID Registrations in Finland - Everything You Need to Know

Sender ID Registrations in Finland - Everything You Need to Know

Find out about how Sender ID registration works in Finland as well as the other Nordic countries.

GatewayAPI and KMD: A collaboration on COVID-19 test results via SMS

GatewayAPI and KMD: A collaboration on COVID-19 test results via SMS

SMS communication in particular proved to be of great importance and was used for a variety of purposes such as notifying close contacts.

Understanding the Differences Between a CPaaS and a UCaaS

Understanding the Differences Between a CPaaS and a UCaaS

Learn about the key differences between a CPaaS and a UCaaS platform and dive deeper into the future of business communication technologies.

RCS in 2024 and an insight into Apple's unexpected announcement

RCS in 2024 and an insight into Apple's unexpected announcement

RCS has been in the works for many, many years, and 2024 looks to be the year when the technology finally makes its big breakthrough. Get the latest update on this new and exciting technology! 

Unlock New Avenues of Customer Communication with WhatsApp Business Messaging

Unlock New Avenues of Customer Communication with WhatsApp Business Messaging

In this blog post, we will touch upon the benefits of WhatsApp as we see it and discuss how integrating WhatsApp into our suite of communication channels will provide you as a customer with new powerful communication capabilities.

Sending SMS Messages with Python: A Step-by-Step Guide

Sending SMS Messages with Python: A Step-by-Step Guide

Sending SMS messages to recipients all over the world is straightforward with GatewayAPI’s robust service. Learn how to integrate GatewayAPI SMS services into your application by using Python code.

How to Implement SMS in Your Black Friday Marketing Strategy

How to Implement SMS in Your Black Friday Marketing Strategy

Black Friday is the Olympian of retail events. Learn strategies to maximize your profits on the big shopping day via SMS marketing.

Staying Ahead of AIT: How to Protect Your Account From Artificially Inflated Traffic

Staying Ahead of AIT: How to Protect Your Account From Artificially Inflated Traffic

In this blog post, you can learn more about Artificially Inflated Traffic (AIT) and what you can do to protect yourself against it.

How to Send SMS Messages With PHP - A Step by Step Guide

How to Send SMS Messages With PHP - A Step by Step Guide

Read a detailed step-by-step guide on how to send SMS messages using the PHP coding language and our SMS API.

How We Protect Your Data: An Introduction to Our GDPR Compliance and Annual ISAE 3000 Audit

How We Protect Your Data: An Introduction to Our GDPR Compliance and Annual ISAE 3000 Audit

Learn how we protect your data and offer complete GDPR compliance, guaranteed by an annual ISAE 3000 audit. Gain insight into our data protection measures.

Sending SMS Messages with Java: A Step-by-Step Guide Using our SMS API and OkHttp

Sending SMS Messages with Java: A Step-by-Step Guide Using our SMS API and OkHttp

Learn how to send SMS messages using Java as well as GatewayAPI’s SMS API and the OkHttp library.

Boost Your Business in 2023 With These Five SMS Marketing Trends

Boost Your Business in 2023 With These Five SMS Marketing Trends

SMS marketing is one of the most effective and reliable ways to reach customers. Learn about five effective trends.

How to Use AI to Create Effective SMS Marketing Campaigns

How to Use AI to Create Effective SMS Marketing Campaigns

Unlock the potential of AI in SMS marketing by optimizing your SMS campaigns with ChatGPT.

SMS Appointment Reminders: The Secret Weapon to Beating No-Shows

SMS Appointment Reminders: The Secret Weapon to Beating No-Shows

Use SMS appointment reminders to reduce no-shows, improve satisfaction and save money – the return on investment is huge! 

The Fight Against Smishing - How Our Extremely Effective Security Measures Work

The Fight Against Smishing - How Our Extremely Effective Security Measures Work

Phishing via SMS is a growing problem worldwide. Read more about the effective security measures we have implemented to prevent fraudsters from using GatewayAPI to send SMS phishing.

Get Started With Slack-based SMS Support

Get Started With Slack-based SMS Support

Learn more about how you can combine Slack with SMS technology to enable frictionless SMS support via Slack.

Why SaaS Companies Should Consider Adding SMS Capabilities

Why SaaS Companies Should Consider Adding SMS Capabilities

Learn more about all the benefits of implementing SMS technology in your SaaS business. Acquire a new recurring source of revenue.

All You Need to Know About North American Toll-Free Numbers

All You Need to Know About North American Toll-Free Numbers

In this blog post, we’ll review what toll-free numbers (TFNs) are and what they can be used for, as well as how to get one.

Protect Your GatewayAPI Account Against Scammers

Protect Your GatewayAPI Account Against Scammers

Read about what you can do to protect your GatewayAPI account against scammers as well as the systems connected to your account.

Our Social Responsibilities

Our Social Responsibilities

At ONLINECITY.IO, the parent company of GatewayAPI, we take our responsibility seriously and strive to make the world a better place both locally and globally.

Create Amazing SMS Campaigns via Our Sister Platform RelationCity

Create Amazing SMS Campaigns via Our Sister Platform RelationCity

Explore the latest features of our sister platform RelationCity, and read more about the brand new and intuitive tools that make planning and sending SMS campaigns a breeze.

Get Started Sending SMS Traffic to the United States With a 10DLC Number

Get Started Sending SMS Traffic to the United States With a 10DLC Number

Read more about your options when you wish to send SMS traffic to the USA, as well as how to get started with a 10DLC number.

Recommendation to Change From 32 to 64 Bit When Storing Message IDs

Recommendation to Change From 32 to 64 Bit When Storing Message IDs

Read more about the importance of using 64 bit instead of using 32 bit when storing message IDs in your own system, as well as the importance of using text strings instead of numbers.

Ultimate Guide to Choosing an SMS Gateway

Ultimate Guide to Choosing an SMS Gateway

In this guide you can get an overview of a number of parameters that are good to keep in mind from the beginning when selecting an SMS gateway.

Send SMS Marketing Messages Directly from Your Browser

Send SMS Marketing Messages Directly from Your Browser

Send SMS marketing messages and SMS communication directly from your browser via our sister platform RelationCity.

EU Setup for GatewayAPI Customers

EU Setup for GatewayAPI Customers

Learn more about how you can get access to a EU setup at GatewayAPI and what it means for you as a customer.

SMS Donations, SMS Polls, and SMS Competitions during Live TV Shows

SMS Donations, SMS Polls, and SMS Competitions during Live TV Shows

Read more about SMS donations, SMS competitions, and SMS polls during live tv shows, as well as how our team can assist you.

OCiD - One Key to the City

OCiD - One Key to the City

Learn more about OCiD and its significance for you as a GatewayAPI user as well as its significance for our upcoming communication platforms.

The Relationship Between Secret Class and Data Processing

The Relationship Between Secret Class and Data Processing

In this blog post, we will dive into h0w our message class Secret Class precisely works, as well as what influence it has on data processing on behalf of our customers.

The Danish Telecom Companies Have Announced Large Price Increases for SMS Traffic to Denmark

The Danish Telecom Companies Have Announced Large Price Increases for SMS Traffic to Denmark

Read about the background for the large price increase on SMS traffic to Denmark, which the Danish telecom companies will implement on July 1, 2021.

GatewayAPI Delivered an Uptime of 100% in 2020

GatewayAPI Delivered an Uptime of 100% in 2020

Gain insight into how our team managed to ensure a perfect uptime of a staggering 100% throughout all of 2020.

Boost Sales with SMS Marketing

Boost Sales with SMS Marketing

We have put together a complete list with tips and ideas on how to get even more sales via SMS marketing on shopping-celebrations such as Black Friday, Cyber Monday, Singles’ Day etc.

How Virtual Numbers Helped Bring Popular Danish Services to Greenland

How Virtual Numbers Helped Bring Popular Danish Services to Greenland

What can virtual numbers be used for? Read our customer case on how virtual numbers helped bring popular Danish services to Greenland.

How We Rewrote a Central Component of GatewayAPI Without You Noticing

How We Rewrote a Central Component of GatewayAPI Without You Noticing

Learn more about the new version of our message router in detail and what benefits the upgrade has for you as well as us.

A New EU Ruling Impacts Your Choice of an SMS Gateway – Learn Why

A New EU Ruling Impacts Your Choice of an SMS Gateway – Learn Why

Learn how a new GDPR-ruling (also known as the Schrems II-case) can have an impact on your choice of an SMS gateway and other IT services.

How to Set Up an SMS Donation Solution Quickly

How to Set Up an SMS Donation Solution Quickly

Read about how you can set up a SMS donation solution quickly by combining GatewayAPI and the automation platform Make.

GDPR, ISAE 3000 Certification and How We Handle Your Data

GDPR, ISAE 3000 Certification and How We Handle Your Data

Our in-house GDPR-specialist, Dennis Grade, has written a detailed account of how we handle your data and make sure that the data protection and compliance are rock-solid.

Using SMS Communication in Emergency Situations

Using SMS Communication in Emergency Situations

SMS messages are an effective tool for disseminating critical information instantly. Learn how our platform is particularly well-suited for this task.

Why the SMS Industry Will Grow in 2020

Why the SMS Industry Will Grow in 2020

Global SMS traffic is expected to grow consistently over the next five years. Find out how a 27-year-old technology can still experience continual growth today.

Easy SMS Automation with Integromat (Make)

Easy SMS Automation with Integromat (Make)

By combining GatewayAPI with Integromat (Make), you can set up SMS automation between hundreds of services with no coding experience whatsoever.

GatewayAPI Is Now on Board the RCS Train

GatewayAPI Is Now on Board the RCS Train

GatewayAPI is part of the RCS project. Read more about the prospects of this new exciting messaging technology as well as some of the first use cases.

SMS Library Solution with GatewayAPI

SMS Library Solution with GatewayAPI

The SMS is a powerful communication tool that can be used by libraries to send notifications and reminders to borrowers. Learn how to set it up here.

Our Cloud (Native) Migration Journey

Our Cloud (Native) Migration Journey

Read in detail how we moved GatewayAPI to the Google Cloud Platform (GCP) via Kubernetes as well as our journey to go fully Cloud Native.

Latest News on RCS

Latest News on RCS

Read an update on the new exciting RCS technology that will give companies a whole set of new tools they can communicate with their customers with.

Get started with SMPP (Short Message Peer-to-Peer)

Get started with SMPP (Short Message Peer-to-Peer)

Learn how to use the SMPP protocol, which is a way to send huge volumes of SMS messages extremely quickly and reliably.

Creating a Smooth Customer Experience via SMS

Creating a Smooth Customer Experience via SMS

Customer case with the Danish company, Minuba. Learn how they have benefitted from integrating our SMS services into their CRM platform.

Stopping Illegal SMS Traffic

Stopping Illegal SMS Traffic

Read about our safety measures to stop illegal SMS traffic. These include verification processes, a scanning system and whitelisting of URLs.

Digitalising the Legal Industry

Digitalising the Legal Industry

Customer case with the digital law firm, NEMADVOKAT. Read about how SMS messages drastically improved their interaction rates.

Complete Guide to Virtual Numbers and Keywords

Complete Guide to Virtual Numbers and Keywords

As the title says: You can learn everything you need to know about virtual numbers and keywords for A2P SMS communication in this blog post.

Standard vs. Premium Traffic – Which to Choose?

Standard vs. Premium Traffic – Which to Choose?

The GatewayAPI Standard Class is suitable for most, whereas the Premium Class suits those who seek additional functionalities such as encryption.

Why Your SMS Messages Are Sometimes Not Delivered

Why Your SMS Messages Are Sometimes Not Delivered

When your SMS messages are not delivered, it is often due to one of the same four reasons. Learn more about them in this blog post.

How to Keep Hackers Out of WordPress

How to Keep Hackers Out of WordPress

Want to keep hackers out of your WordPress installation? Then our two-factor security SMS plugin might just be the right choice for you.

Using GatewayAPI with Cicero

Using GatewayAPI with Cicero

Read a technical step-by-step guide on how to integrate GatewayAPI with Cicero Library Management System at your library.

How We Operate, Handle Security and Monitor GatewayAPI

How We Operate, Handle Security and Monitor GatewayAPI

Read about our setup as well as our daily operations, which are aimed at making sure that the security and uptime of GatewayAPI is sky-high at all times.

Update on RCS (Rich Communication Services)

Update on RCS (Rich Communication Services)

Read an update on the new exciting RCS technology that will give companies a whole set of new tools they can communicate with their customers with.

SMS Donations – For Charities and Other NGOs

SMS Donations – For Charities and Other NGOs

The Danish Red Cross uses GatewayAPI to manage SMS broadcasts and SMS donations. Read the case for inspiration on how to utilise the SMS technology.

How To Set Up Email To/From SMS

How To Set Up Email To/From SMS

Learn how to set up email to SMS and SMS to email in this guide, and get inspiration on how to use this technology for different purposes.

GatewayAPI as an Alternative to Building an App

GatewayAPI as an Alternative to Building an App

Customer case with the company Realkreditkonsulenten, where the company explains how they use GatewayAPI’s SMS services as an alternative to building an app.

Roskilde: A Cash Free Festival

Roskilde: A Cash Free Festival

Customer case with the world-renowned Roskilde Festival. Read about how the festival used SMS-technology to supplement their Roskilde Festival debit card.

How to Send SMS Messages From Zendesk

How to Send SMS Messages From Zendesk

Step-by-step guide on how to set up SMS communication by integrating Zendesk with GatewayAPI. Offer your customers an even better service.

7 Ways SMS messages can Improve Customer Satisfaction

7 Ways SMS messages can Improve Customer Satisfaction

Read our tips for ways to improve your customer satisfaction by using different SMS services. Included with a list of do’s and don’ts.

Goodbye BETA, Hello World!

Goodbye BETA, Hello World!

Read about our journey from upstart, to BETA to fully-developed with customers all over the world, sending millions of SMS messages every month.

How To Integrate PRTG With GatewayAPI

How To Integrate PRTG With GatewayAPI

Learn how to integrate PRTG Network Monitor with GatewayAPI to enable SMS notifications, giving you an easy way to always know the status of your servers.

RCS: Next Generation SMS

RCS: Next Generation SMS

The post covers the RCS technology with a discussion of the strengths and weaknesses of this new technology that is poised to be the next generation of SMS.

5 New Major Features In Our WordPress Plugin

5 New Major Features In Our WordPress Plugin

Our WordPress plugin has been upgraded! Read about the five new major features that have been added to enhance your experience with the plugin.

How We Deliver Your SMS Messages

How We Deliver Your SMS Messages

In this post we explain how we deliver your SMS messages, the difference between the Standard and Premium class as well as why we do not offer “Bulk SMS”.

Pushing the Limits of Distribution of Vital Information

Pushing the Limits of Distribution of Vital Information

Customer case with Blue Idea, whose service specialises in the distribution of critical internal and external information in a wide range of organisations.

Two-Factor Login With One-Time SMS Code

Two-Factor Login With One-Time SMS Code

In this how-to guide for developers, we will show you, step-by-step, how easy it is to set up SMS two-factor authentication with GatewayAPI.

Two-Way Messaging with Wolfram|Alpha

Two-Way Messaging with Wolfram|Alpha

Read about the technical aspect of how you can receive a question via SMS, query WolframAlpha for a reply and then respond via SMS.

How to Set Up Microsoft OMS with GatewayAPI

How to Set Up Microsoft OMS with GatewayAPI

This blog post guides you through the simple process of setting up OMS to send SMS alerts via GatewayAPI.

Bringing Kannel APIs Into the 21st Century

Bringing Kannel APIs Into the 21st Century

This post addresses the ‘what’, ‘why’ and ‘how’ that makes our API so different from your typical Kannel integration.

SMS the Entire World for Free in WordPress!

SMS the Entire World for Free in WordPress!

Read more about our free GatewayAPI WordPress-plugin, enabling you to send SMS messages to your customers straight from WordPress.